Heating element



April 23, 1929. F. D. PITT 1,710,512

HEATING ELEMENT Filed July 15, 1927 INVENTOR ATTORNEY Patented Apr. 23, 1929.

UNITED STATES PATENT OFFICE.

FREDERICK I). PITT, OF KANSAS CITY, MISSOURI, ASSIGNOR TO THE ANDERSON-PITT CORPORATION, OF KANSAS CITY, MISSOURI, A CORPORATION OF MISSOURI.

HEATING ELEMENT.

Application filed July 15, 192?. Serial No. 205,944.

My invention relates to electric heaters and more particularly to a heater of that type including a concave reflector and a heating element for transmitting rays to the reflector for reflection in a beam into the space to be heated; the principal object of the present invention being to provide a heating element from which all of the eflective rays may be directed onto the reflector in a manner to provide the greatest possible efiiciency from a given amount of current.

In accomplishing this object I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective View of an electric heater including a heating element embodying my improvement.

Fig. 2 is an enlarged detail perspective View of the heating element, a part of a coil being removed and other parts distorted for better illustration.

Fig. 3 is an edge View of the heating element.

Fig. 4; is a detail perspective view of a part of the resistance member, particularly illustrating portions of adjacent coils and their connections.

Referring more in detail to the drawings:

1 designates a reflector of any ordinary type acljustably mounted on a pedestal 2 by bracket arms 3 and a wing nut 4. 5 designates a cable for the circuit wires 6 and '4', leading through eyes 8 and 9 in the base of the reflector and 10 a bracket arm mounted on the reflector near its rim and spaced from the refleeting surface to support the heating element in functional relation to the reflector The heating element comprises a core 11 including a body member 12 having a flat face provided with parallel grooves 13, forming spaced ridges 14, the ridged portions being extended alternately from opposite edges of the body to form anchoring tongues 15. At the side of the body opposite the flat face are spaced ribs 16, having apertures 17 through which the circuit wires may be passed to attach them to the ribs and retain the heating portion thereof on the core.

The circuit wires are formed in parallel coils 18 which lie in the grooves 13 on the flat face of the core and are connected in train by strands 19, which are hooked over the anchoring tongues 15 to hold the coils in place within the grooves.

The bracket member 10 has a U-shaped head 20 at its outer end, the arms 21 of which are adapted to seat in grooves 22 in the outer faces of the ribs 16 of the core 11 to removabl mount the heating element in spaced relation to the reflector with the flat face of the core and the coils mounted thereon directed toward the reflector.

With the heating element constructed and mounted on the reflector as described, rays of heat generated in the coils will pass tothe reflector and be diverted thereby in a beam to the space served by the heater, all of the effective rays of the coils passing to the refiector and being by it diverted in a concentrated beam into the space to be heated without loss of efficiency which would be incident to direct radiation and its incident dissipation of heat locally of the element.

Nhat I claim and desire to secure by Letters Patent is:

1. A heating element including a core body having transverse ridge members in one face forming intervening grooves and extended alternately from opposite edges of the body to form anchor tongues, and resistance members seated in said grooves and having connecting strands hooked over the anchor members to retain the coils.

2. A heating element including a core body having transverse ridge members in one face forming intervening grooves and extended alternately from opposite edges of the body to form anchor tongues, resistance members seated in said grooves and having connecting strands hooked over the anchor members to retain the coils, and spaced ribs on the opposite face of the core body adapted for cooperation with a. supporting member and adapted to receive and support opposite ends of the resistance members.

3. A heating element including a core body having transverse ridge members in one face forming intervening grooves and extended alternately from opposite edges of the body to form anchor tongues, resistance members seated in said grooves and having connecting strands hooked over the anchor members to retain the coils, and spaced ribs on the opposite face of the core body having slots for removably mounting the core body on supporting members and apertures to receive the resistance members.

4. In an electric heater including a concave reflector and a circuit wire, a heating element including a core body having; a groove in one face, :1 resistance element comprising a portion of said circuit wire seated in said groove, spaced ribs 011 the opposite face of the core body having apertures to receive the circuit wire for retaining the resistance element on the core body, and means including said ribs for supporting the core body in spaced relation to the reflector.

5. In an electric heater, a concave reflector having wire receiving eyes in its base, a core having spaced apertured slotted ribs on one face, circuit wires leading through said eyes and including a resistance member for mounting on the opposite face of the core and extending through the apertures of the ribs for retention of the resistance element on the core, and means including members engageable in the slots of the ribs for supporting the core in spaced relation with the base of 2 the reflector.

In testimony whereof I affix my signature.

FREDERICK D. PITT. 

